io.atomix.storage.buffer

Class BitArray

java.lang.Object

io.atomix.storage.buffer.BitArray

All Implemented Interfaces:

AutoCloseable

public class BitArray
extends Object
implements AutoCloseable

Direct memory bit set.

The direct bit set performs bitwise operations on a fixed count UnsafeHeapBytes instance. Currently, all bytes are UnsafeHeapBytes, but theoretically UnsafeMappedBytes could be used for durability as well.

Author:

Jordan Halterman

Method Summary

Modifier and Type	Method and Description
static BitArray	allocate(long bits) Allocates a new direct bit set.
void	close()
BitArray	copy() Copies the bit set to a new memory address.
long	count() Returns the number of bits set in the bit set.
boolean	get(long index) Gets the bit at the given index.
BitArray	resize(long size) Resizes the bit array to a new count.
boolean	set(long index) Sets the bit at the given index.
long	size() Returns the total number of bits in the bit set.
String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

allocate

public static BitArray allocate(long bits)

Allocates a new direct bit set.

Parameters:

bits - The number of bits in the bit set.

Returns:

The allocated bit set.

set

public boolean set(long index)

Sets the bit at the given index.

Parameters:

index - The index of the bit to set.

Returns:

Indicates if the bit was changed.

get

public boolean get(long index)

Gets the bit at the given index.

Parameters:

index - The index of the bit to get.

Returns:

Indicates whether the bit is set.

size

public long size()

Returns the total number of bits in the bit set.

Returns:

The total number of bits in the bit set.

count

public long count()

Returns the number of bits set in the bit set.

Returns:

The number of bits set.

resize

public BitArray resize(long size)

Resizes the bit array to a new count.

Parameters:

size - The new count.

Returns:

The resized bit array.

copy

public BitArray copy()

Copies the bit set to a new memory address.

Returns:

The copied bit set.

close

public void close()

Specified by:

close in interface AutoCloseable

toString

public String toString()

Overrides:

toString in class Object